My thoughts exactly, I got my Harley frame blasted and powder coated,it didnt last 6 months before it was flaking off,everytime I washed it more and more flaked off just like puff pastry I resorted to a full stripdown and 2 pack paint , it was still good when I sold the bike 4 years later. In my view powder coating is no good for exterior applications. :tdown:The threads I have seen on this before swear by epoxy primer, 2K primer then Colour and clear.
Once the powder coat chips your knackered.
Countryboy,Which is better for engine parts, chassis etc???? I know the custom bike guys use powdercoating a lot. Was just wondering what others in the rod scene think is best
Sorry to hear you had problems, the consequences of a poor powder coating job can be painful often requiring full strip downs and alot of work just to get back to where you were. Yes, Unfortunately there are alot of companies that don't do it properly, they fail to apply any key, degrease with thinners and insufficiently cure. Hopefully this thread will help RnS's users avoid a bad job, talk with the coaters first, confirm the process they will use, provide the coater with additional bogus part or pre-agree a test piece, carry out your own adherence test using a stanley knife to cut the hatch and good sticky tape.I too have had problems with powder coating getting chipped then rust spreading underneath leading to sections just lifting and moisture getting trapped between the coating and the steel causeing worse rust than if the metal was just open to the elements. From what you say Toddy i guess there's a lot of companies that just dont do it properly.
another down side with powder coating as far as i'm concerned is that you cant touch it up so if you do damage it or want to carry out a modification to a chassis etc you cant just repair a localised section like you can with paint.
i swear by epoxy primer on pretty much everything i paint, it has fantastic a adhering qualities on bare steel, aluminium ets and is a great barrier coat on bodywork where your doing repairs where your having to paint over old layers of paint. it's been about 11 years since i used etc primer